Facebook is leading app on smartphones

The mobile transition is happening astonishingly quickly. Last year, smartphone penetration crossed 50 percent for the first time, led by Android phones. People spend 63 percent of their time online on desktop computers and 37 percent on mobile devices, including smartphones and tablets, according to comScore.

Just as they compete on computers, Facebook and Google are dominant and at each other’s throats on phones.

Google’s map app for the iPhone, which had been the most used mobile app, lost its No. 1 spot to Facebook after Apple kicked Google’s maps off the iPhone in October. Now, Facebook reaches 76 percent of the smartphone market and accounts for 23 percent of total time spent using apps each month. The next five most used apps are Google’s, which account for 10 percent of time on apps.